The Earth Shouldn't Have Oxygen

The video debunks the myth that the Amazon Rainforest produces 20% of the world's oxygen, explaining that all land plants produce about 25% of oxygen, with the rest from oceans. It discusses the carbon cycle, highlighting photosynthesis, respiration, and combustion. The video explains the balance of oxygen and carbon dioxide, emphasizing the role of phytoplankton and the Amazon Rainforest as a carbon sink. It concludes by stressing the importance of preserving the rainforest for its ecological services.

What percentage of the world's oxygen is produced by all land plants combined?

• 75%

• 10%

• 25%

• 50%

What process do plants use to convert carbon dioxide into carbohydrates and oxygen?

• Photosynthesis

• Respiration

• Combustion

• Oxidation

What term is used to collectively describe respiration and combustion in the context of the carbon cycle?

• Oxidation

• Burning

• Photosynthesis

• Decomposition

What happens to carbohydrates that fall to the bottom of the ocean due to phytoplankton blooms?

• They are immediately burned

• They remain unburned

• They are converted into oxygen

• They float back to the surface

Why is the Amazon Rainforest considered a significant carbon sink?

• It produces 90% of the world's oxygen

• It traps 90 billion tons of carbon dioxide

• It covers 90% of the Earth's surface

• It consumes 90% of the world's carbon dioxide